
class Student(object):
    role = "Stu"

    def __init__(self,name):
        self.name = name

    @staticmethod
    def fly(self):
        print(self.name,"is flying...")

    @staticmethod
    def walk():
        print("student is walking...")

s = Student("Jack")
s.fly(s) # s.fly(s)
s.walk()